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Fix x86 CPU id detection to identify Penryn (and future processors).

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61556 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2009-01-02 05:29:20 +00:00
parent 52ceafa5c7
commit 018b7ee91a
1 changed files with 11 additions and 2 deletions

13
lib/Target/X86/X86Subtarget.cpp

@ -180,8 +180,16 @@ static const char *GetCurrentX86CPU() {
unsigned EAX = 0, EBX = 0, ECX = 0, EDX = 0;
if (X86::GetCpuIDAndInfo(0x1, &EAX, &EBX, &ECX, &EDX))
return "generic";
unsigned Family = (EAX >> 8) & 0xf; // Bits 8 - 11
unsigned Model = (EAX >> 4) & 0xf; // Bits 4 - 7
unsigned Family = (EAX >> 8) & 0xf; // Bits 8 - 11
unsigned Model = (EAX >> 4) & 0xf; // Bits 4 - 7
if (Family == 6 || Family == 0xf) {
if (Family == 0xf)
// Examine extended family ID if family ID is F.
Family += (EAX >> 20) & 0xff; // Bits 20 - 27
// Examine extended model ID if family ID is 6 or F.
Model += ((EAX >> 16) & 0xf) << 4; // Bits 16 - 19
}
X86::GetCpuIDAndInfo(0x80000001, &EAX, &EBX, &ECX, &EDX);
bool Em64T = (EDX >> 29) & 0x1;
@ -216,6 +224,7 @@ static const char *GetCurrentX86CPU() {
case 13: return "pentium-m";
case 14: return "yonah";
case 15: return "core2";
case 23: return "penryn";
default: return "i686";
}
case 15: {